Figure 3From: Acute-phase serum amyloid A production by rheumatoid arthritis synovial tissueImmunohistological analysis of RA synovial membrane. Serial tissuesections were stained with (a) antibody to A-SAA, (b) anti-CD68and (c) IgG. A-SAA-positive cells are seen in the surface of the lininglayer and in the perivascular areas. Some vascular endothelial cells are weaklypositive (a). CD68-positive cells are seen throughout the lining layerand in the perivascular areas of the sublining layer. Vascular endothelialcells are negative (b). No staining was observed in the control sections(c).Back to article page